They were talking about the P prototypes on the Parker Forum. Someone dug up an old post from 2011 from Richard Skeuse, son of "Mr. Skeuse".
I guess this could be the final word on the whole issue.
"Hi Guys, The "P" on the serial number was for Prototype. The first P numbered gun was # P 0026. I do not know how many were built as I was not that involved with them at that time. My father did not "give them away" as gifts etc. If you wanted one you ordered it just like anyone else, and you payed for it like anyone else. Hope that helps some."
"The P was only used on the first couple of orders of 20 Ga guns. It was not used after that. Only on 20's and nothing else. Thanks!"
